src/v8/test/mjsunit/top-level-assignments.js

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// Testing that optimization of top-level object initialization doesn't
// break V8.

var x = new Object();
x.a = 7;
x.b = function() { return 42; };
x.c = 88;
x.d = "A Man Called Horse";

assertEquals(7, x.a);
assertEquals(42, x.b());
assertEquals(88, x.c);
assertEquals("A Man Called Horse", x.d);

var y = new Object();
y.a = 7;
y.b = function() { return 42; };
y.c = 12 * y.a;
y.d = "A Man Called Horse";

assertEquals(84, y.c);

var z = new Object();
z.a = 3;
function forty_two() { return 42; };
z.a += 4;
z.b = forty_two;
z.c = 12;
z.c *= z.a;
z.d = "A Man Called Horse";

assertEquals(84, z.c);

var x1 = new Object();
var x2 = new Object();
x1.a = 7;
x1.b = function() { return 42; };
x2.a = 7;
x2.b = function() { return 42; };
x1.c = 88;
x1.d = "A Man Called Horse";
x2.c = 88;
x2.d = "A Man Called Horse";

assertEquals(7, x1.a);
assertEquals(42, x1.b());
assertEquals(88, x1.c);
assertEquals("A Man Called Horse", x1.d);

assertEquals(7, x2.a);
assertEquals(42, x2.b());
assertEquals(88, x2.c);
assertEquals("A Man Called Horse", x2.d);

function Calculator(x, y) {
  this.x = x;
  this.y = y;
}

Calculator.prototype.sum = function() { return this.x + this.y; };
Calculator.prototype.difference = function() { return this.x - this.y; };
Calculator.prototype.product = function() { return this.x * this.y; };
Calculator.prototype.quotient = function() { return this.x / this.y; };

var calc = new Calculator(20, 10);
assertEquals(30, calc.sum());
assertEquals(10, calc.difference());
assertEquals(200, calc.product());
assertEquals(2, calc.quotient());

var x = new Object();
x.__defineGetter__('a', function() { return 7 });
x.b = function() { return 42; };
x.c = 88;
x.d = "A Man Called Horse";

assertEquals(7, x.a);
assertEquals(42, x.b());
assertEquals(88, x.c);
assertEquals("A Man Called Horse", x.d);